Add task author if none

taskapp/views.py

@@ -141,6 +141,7 @@ class TaskUpdateView(UpdateView):
     def form_valid(self, form):
         try:
             self.object = form.save()
+            if self.object.author is None:
                 self.object.author = self.request.user
                 self.object.save(update_fields=['author'])
             task_id = safe_int(self.kwargs.get('task_id', 0))